A modified friction-viscous solid boundary of the SPH method for landslide simulation | |
Liang, Heng2; Jiang, Yuanjun1,2; Ning, Po2; Zhu, Lei2 | |
刊名 | COMPUTERS AND GEOTECHNICS |
2023-03-01 | |
卷号 | 155页码:14 |
关键词 | SPH Solid boundary condition Friction Landslide Complex terrain |
ISSN号 | 0266-352X |
DOI | 10.1016/j.compgeo.2022.105238 |
英文摘要 | Bed friction characteristics are important factors controlling landslide movement processes. To address existing boundary condition deficiencies in describing the bed friction characteristics of landslide movements on complex terrain for the SPH method, a modified friction-viscous solid boundary condition is proposed. Within the solid boundary condition, the solid boundary is composed of line segments in 2D conditions and triangular segments in 3D conditions. The solid boundary is treated as a rigid material, and the SPH particle is treated as an elastic particle. The method used to calculate the values and directions of the contact, friction and viscous forces is presented. The proposed solid boundary condition is validated through water and granular material column collapse experiments. The dynamic process of a realistic landslide on complex terrain is simulated to demonstrate the applicability of the proposed solid boundary condition. Compared with the existing solid boundary condition, the proposed solid boundary condition has advantages in embedding friction model and wall function, exerting friction and viscosity force, keeping the stability of contact force, and establishing a complex terrain model. |
资助项目 | International Science and Technology Cooperation Program of China[2018YFE0100100] ; National Natural Science Foundation of China[42107193] ; National Natural Science Foundation of China[42172320] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20030301] ; National Key Research and Development Program of China[2020YFC1512000] |
WOS关键词 | SMOOTHED PARTICLE HYDRODYNAMICS ; NUMERICAL-SIMULATION ; RUN-OUT ; FLOW ; MODEL ; DEM ; FORMULATION ; RHEOLOGY ; BEHAVIOR ; IMPACT |
WOS研究方向 | Computer Science ; Engineering ; Geology |
语种 | 英语 |
出版者 | ELSEVIER SCI LTD |
WOS记录号 | WOS:001134167400001 |
资助机构 | International Science and Technology Cooperation Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; National Key Research and Development Program of China |
内容类型 | 期刊论文 |
源URL | [http://ir.imde.ac.cn/handle/131551/57842] |
专题 | 中国科学院水利部成都山地灾害与环境研究所 |
通讯作者 | Jiang, Yuanjun |
作者单位 | 1.Univ Chinese Acad Sci, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Hazards & Earth Surface Proc, Chengdu, Peoples R China |
推荐引用方式 GB/T 7714 | Liang, Heng,Jiang, Yuanjun,Ning, Po,et al. A modified friction-viscous solid boundary of the SPH method for landslide simulation[J]. COMPUTERS AND GEOTECHNICS,2023,155:14. |
APA | Liang, Heng,Jiang, Yuanjun,Ning, Po,&Zhu, Lei.(2023).A modified friction-viscous solid boundary of the SPH method for landslide simulation.COMPUTERS AND GEOTECHNICS,155,14. |
MLA | Liang, Heng,et al."A modified friction-viscous solid boundary of the SPH method for landslide simulation".COMPUTERS AND GEOTECHNICS 155(2023):14. |
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